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* '''Simon Marlow''' has implemented a chunked stack representation, which should improve the performance of programs that need large stacks. See the [[http://hackage.haskell.org/trac/ghc/blog/stack-chunks ChunkedStack]]. This is already in the mainline and will be in the 7.2.1 release.

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* '''David Terei''' has fixed a number of bugs in the LLVM backend, particularly on Mac OSX. OSX 64bit and LLVM 2.9 are now supported in HEAD and will be included in the next GHC release.